GB/T 3633-1995 Technical requirements for torsion shear type high strength bolt connections for steel structures
Some standard content:
1C:5_21. 060. 10
National Standard of the People's Republic of China
GB/T3632---3633—1995
Sets of torshear type high strength bolthexagon nut and plain washer for steel structures1995-12-19Promulgated
State Administration of Technical Supervision
Implementation on 1996-08-01
National Standard of the People's Republic of China
Technical requirements for sets or lorsbear type high strengthhlt hexagon nut and plain washer for steel structures1Subject content and scope of application
GR/T 3633--1995
Generation: 3653-83
This standard stipulates the technical requirements, test methods, acceptance and packaging of steel stations for use in rapid shear type joints. This standard is applicable to the construction industry and special construction, highway and titanium road extension beams, racks, pipeline supports, and other high-humidity joints that require the use of friction type joints. 2 Reference standards
Fasteners acceptance inspection, packaging
GH 229
GB ees
Gs S077
Ordinary thread standard
Ordinary thread tolerances and matching
Jinping pull test method
Jinjin notch test method
Chemical structure parts
Jinjin decoration technology system
GB 2103.1
t, 31c3.3 bzxz.net
GB 3775, 1
3 Technical requirements
Fastener machine performance control, screw and stud fastener machine performance
Fastener tolerance
Screw performance, nail and washer
Fastener tolerance
Flat belt net
Fastener surface depression
Screw performance control, prohibition and screw
General requirements
Fastener surface defects
3Material, energy grade
Selection, process grade and standard shall be in accordance with the provisions of the table: National Technical Supervision No. 15951215 approved 19960801 implementation
3.2 Mechanical properties
3.2.1 Mechanical properties
3.2.1.1 Mechanical properties of test piece
GU/T 3633
Material Science
Standards
TK3077
GB3077
GB 699
Manufacturers shall conduct tensile tests on bolt material samples, and the results shall comply with the provisions of Table 2. According to user requirements, material impact toughness tests may be conducted, and the results shall comply with the provisions of Table 2. Table 2
Tensile strength
3.2.1.2 Mechanical fatigue properties of actual objects
Strong strength
When the bolt is subjected to a load test, when the tensile force is within the range specified in Table 3, the fracture shall occur in the threaded part or at the junction of the thread and the rod
This standard
3.2. 1.3 Current
Total stress ideal surface weight
35: :Ke:
3:5000
Performance band certificate 10.95
Tension, x,
438 coc
When the thread property is 1./≤3, if the load change test cannot be performed, the core hardness test should be carried out. The core hardness value should comply with the provisions of Table 4. Table 4
Performance level
JIRC
Pure civil HVs
3.2.1. 4 De-recovery layer
GBT3633-1995
De-recovery technology GB3098.1 table and relevant provisions, 3.2-2 screw machine performance
3.2.7.1 Guarantee the load
frequency guarantee load business space according to the provisions of Table 5, screw technology line
3.2.2.2 hardness
nominal disc force autumn surface delivery
screw each hardness diagram according to Table 6 are all specified
Temperature grade
3.2.3 Hardness
Rockwell HR
Road and road HRC
The hardness of the pad net should be HV329-43HRC35-~453.3 According to the requirements of the second purple circle formula
connection system, the thread thickness should be the same as the standard of each batch of cases. When the hardness is less than the value in the table, the axial force test may not be carried out. 10
Performance level
Guaranteed tolerance should be less than 5.
Guaranteed (A,XS,)
255 DI
J1560n
357606
Vickers HV
Thread specifications
3. 4 Thread properties, nut threads
GB/T3633-1995
3.4.1 The basic dimensions of the thread shall be in accordance with the provisions of GB196 for coarse pitch ordinary pitch. The effective tolerance zone of the screw pitch shall be 6 in GB197, and the tolerance zone of the nut thread shall be 6H in GB197.
3. 4.2 The maximum value of the relative tendency R, of the effective tooth side surface is 12.5MTEL. 3.5 Surface defects
3.5.1 The surface defects of bolts and nuts shall comply with the provisions of GB 5779.1 and GB 5779.2 respectively. 3.5.2 The surface defects of bolts and nuts shall comply with the provisions of GB 5779.1 and GB 5779.2 respectively. 3.5.2 The surface defects of bolts and nuts shall comply with the provisions of GB 5779.1 and GB 5779.2 respectively. 3.6 Other dimensions and geometric tolerances
The other dimensions and geometric tolerances of bolts, nuts and washers shall comply with the provisions of GB 3103.1 and GB 3103.3 for core products. 3.7 Surface treatment
The surface of screws, screw discs and washers shall be treated with rust prevention. The surface treatment and formula shall be selected by the manufacturer. The cutting force of the connection after treatment shall comply with the provisions of Article 3.3.
4 Test method
The following test shall be carried out at room temperature.
4.1 Test method for ignition plug
4.1.1 Test specimen pressure test and impact test The pressure test specimen and impact test specimen are taken from a piece of material. After heat treatment, the material is made into pressure test specimen according to the provisions of CB228. When processing the test specimen, the total diameter of the rod should not exceed the diameter of the test specimen (about 4/4 of the area). 4.1.1.2 Impact test
After heat treatment, the material is made into a tongue test specimen according to the provisions of GB229, and the test is carried out. 4.1.2 Quick load test
The screw mold load test is carried out according to the heat treatment of GB 3098. 1, Section 8, 5. Among them, the pressure is 10°. 4.1.3 Hardness test
Hardness test of bolts shall be in accordance with the provisions of GB3096.1, Section 8.3. 4.1.4 De-embedding test
Decarburization test of bolts shall be in accordance with the provisions of GB3098.1, Section 8. 4.2 Nut ageing method
4.2.1 Guarantee load test
Guarantee load test of nuts shall be in accordance with the provisions of GB3098.2, Section 6 and Section 8. 4.2.2 Hardness test
Hardness test of nuts shall be in accordance with the provisions of GB3098.2, Section 8.2. 4.3 Silicon content test
Inverse hardness test of pads, select any four points on the pads and take the average of the last three points. In case of any dispute, arbitration shall be conducted by the Heavier Hardness (HV:) test.
4.4 Tightening axial force test of joints
CB/T36331995
4.4.1 Note: The test should be carried out on the auxiliary force gauge (or measuring ring). Each joint (one screw, one nut and one type) can be used once, and the specification ratio is not allowed to be used. 4.4. The fastener should be fully connected. The side with the negative connection should be facing the nut support surface. During the test, the gasket should not rotate, otherwise the test will be invalid. 5 Inspection regulations
5.1 The same batch is carried out according to the same material, furnace number, thread specification, length (when the bolt length is 10mm, the length difference is 1.m. When the length and width are 0m, the length difference is ≤21mm, which can be the same length) machine recovery, heat treatment process and surface treatment process of the same screw thread as the batch: "· Material, furnace loss, specification specification.The operation of machining, salt treatment and surface treatment is the return: the company's material number, specification, mechanical processing, processing process design table and the whole process drawing is the return. The company's batch of screws, nuts and washers are the same as the connection brush:
The main certificate connection pair is missing, and the delivery is a large batch of 300 sets. 5.2 The purchase acceptance plan is based on B.
5.3 The inspection of the connection pair axial force, 3 sets are sampled from each batch. 5.4 The manufacturer should provide a quality certificate for each batch of products with the following contents: material, number, chemical composition, specifications, quantity, mechanical properties test data, average value, standard deviation and test environment temperature of the connecting pair and the fastening shaft; d. Date of manufacture and batch number; 6. When the user has any objection to the product quality, under normal operation and storage conditions, the manufacturer shall raise the objection within one month of the product's date of manufacture, and both parties shall conduct re-inspection in accordance with the requirements of this certificate. 7 Marking and packaging
7.1 The performance grade of the steel structure shall be confirmed by the relevant department in advance (4-character mark <10.9S) and the manufacturer's mark (Figure 2), where \ can be omitted: "5\ indicates that the steel structure will be bolted with commercial strength end bolts; ×× is the manufacturer's mark, 7.2 The performance grade (1H) and the manufacturer's mark shall be printed on the surface of the single-sided chamfered nut; the performance grade and the manufacturer's mark shall be printed on the double-sided chamfered nut (Figure 2): H\ indicates a strong hexagonal nut for steel structure: × is the manufacturer's mark,
7.3 The packaging should be firm and moisture-proof. The box should be packed according to the combination of the connection pairs. The mixed quantity of the connection pairs shall not exceed 40 without disassembly. The subpackaging method in the package shall be determined by the manufacturer. 12
GB/T3633- 1995
The packaging box should be marked with the manufacturer, product name, standard terminal number, batch number, specification, number plate and wool cover, etc., and additional instructions:
This standard is issued by the Ministry of Machinery Industry of the People's Republic of China + The National Technical Committee for Standardization of Fasteners is responsible for this standard. The Ministry of Metallurgical Industry's Construction Research Institute and the Ministry of Machinery Industry's Machinery Standardization Research Institute are responsible for this standard. The Shanghai Standard Parts General Public Printing Shanghai Great Wall High Strength Screw Research Institute is responsible for this standard. This standard adopts the national standard 1504775-1961 High Strength Hexagon Nuts for Steel Structures - Grade 2 and Grade 10-1333IS07416-1984 Flat Washers for Steel Structures and Japanese JSS1109-19814 Shear Wall High Curve Nuts, Hexagon Butterfly Nuts, Flat Connections for Structural Connections.
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